Harmy said:
Well, TS Muxer automatically converts subtitles when you create a BD.
No there's still reasons not to go that route. When tsMuxer converts SRT files, there's font/size/positioning/layout/etc information that tsmuxer does which can be wrong under some circumstances. Fonts are most likely decent if you stick with Latin/Cyrillic alphabets, but venture too far outside that and you could be in for trouble (CJK subs should not use the same font as each other, for example). tsmuxer's positioning choices may overlap subtitles on top of onscreen text (burnt-in alien subs), making them harder to read, or it may position them outside the frame, making them unusable in CIH systems. It's likely not the end of the world for most users to let tsmuxer handle it, but if you're going through the trouble of burning a BD, you may as well be certain it'll end up right.